Colored Concrete Rock Salt Finish
Salt finish concrete surface is obtained by inserting coarse rock salt crystals using rollers on the freshly placed concrete surface and washing it off with streams of water after the concrete is set.
Colored concrete rock salt finish. This procedure gives a rough subtle texture and skid resistance to plain or coloured concrete. Installing salt finish concrete requires little extra material or equipment rock salt and a roller to press it on the surface of fresh concrete is it. Considered a step above smooth or broom finished concrete a salt finish leaves a speckled pattern of shallow indentations on the concrete surface similar to the appearance of slightly pitted weathered rock. A rock salt finish isn t recommended for use in areas subject to freezing weather because water trapped in the holes tends to spall the surface when frozen.
A more detailed account of the finishing process is provided in the portland cement association publication color and texture in architectural concrete. Exposing concrete to salt isn t always a bad thing especially in the case of a rock salt finish a traditional and easy method for adding subtle texture and skid resistance to plain or colored concrete.